(Force and Motion - I) Consider the system shown in figure with mA = 9

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(Force and Motion - I) Consider the system shown in figure with mA = 9.5 kg and mB = 11.5 kg. The angles θA = 59∘ and θB = 32∘. i Draw the free body diagrams for block A and block B. ii In the absence of friction, what force F would be required to pull the masses at a constant velocity up? iii The force F now is removed. What is the magnitude and direction of acceleration of the two blocks? iv In the absence of F, what is the tension in the string? Answer: ii) 140 N iii) a→ = −6.7 m/s2 i^ iv) 17 N

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(Force and Motion - I) Consider the system shown in figure with $m_{A} =$ $9.5 k g$ and $m_{B} = 11.5 k g$ . The angles $θ_{A} = 59^{\circ}$ and $θ_{B} = 32^{\circ}$ . i Draw the free body diagrams for block $A$ and block $B$ . ii In the absence of friction, what force $F$ would be required to pull the masses at a constant velocity up? iii The force $F$ now is removed. What is the magnitude and direction of acceleration of the two blocks? iv In the absence of $F$ , what is the tension in the string? Answer: ii) $140 N$ iii) $\vec{a} = - 6.7 m / s^{2} \hat{i}$ iv) $17 N$